BOLD MAGENTA part numbers are new for 2023 PARTS-UNLIMITED.COM 2023 | OFFROAD PISTON & PISTON KITS 1142 HIGH-PERFORMANCE PISTONS (CONT) FITS MODEL BORE (MM) X STROKE (MM) DISPL. (CC) BORE SIZE (MM) OVER SIZES (MM) PK KIT PART # PISTON PART # REPL. RING SET PART # REPL. CIRCLIPS PART # REPL. WRIST PIN PART # TOP-END BEARING PART # HONDA 2-STROKE (CONT) CR125R 95-97 54 125 54 STD 0903-0726 0910-0729 2126CS CW15 - - Racer’s Choice GP Style x 134 56 2.0 - 0910-0730 2205CS Electra Coated. No intake window. Pinned 54.5 on centerline. Longer skirt than stock *Nikasil Bore - Cylinder sleeving or replating required for oversizes CR125R 98-99 54 125 54.0 STD 0903-0293 676M05400 2126CS CW15 S-467 B1001 Pro-Lite x 54.5 0.5 - 676M05450 2146CS *Nikasil Bore - 54.5 55.0 1.0 0903-0234 676M05500 2165CS Cylinder sleeving or replating 56.0 2.0 0903-0245 676M05600 2205CS required for oversizes CR125R 98-99 54 125 54 STD 0903-0728 0910-0729 2126CS CW15 - - Racer’s Choice GP Style x 134 56 2.0 - 0910-0730 2205CS Electra Coated. No intake window. 54.5 Pinned on centerline. Longer skirt than stock *Nikasil Bore - Cylinder sleeving or replating required for oversizes CR125R 00 54 125 54.0 STD 0903-0284 676M05400 2126CS CW15 S-467 B1001 Pro-Lite x 54.5 0.5 - 676M05450 2146CS *Nikasil Bore - 54.5 55.0 1.0 - 676M05500 2165CS Cylinder sleeving or replating 56.0 2.0 - 676M05600 2205CS required for oversizes CR125R 01-02 54 125 54.0 STD 0903-0301 676M05400 2126CS CW15 S-467 B1001 Pro-Lite x 54.5 0.5 0903-0179 676M05450 2146CS *Nikasil Bore - 54.5 55.0 1.0 0903-0259 676M05500 2165CS Cylinder sleeving or replating 56.0 2.0 0903-0217 676M05600 2205CS required for oversizes CR125R 00-02 54 125 54 STD 0903-0730 0910-0729 2126CS CW15 - - Racer’s Choice GP Style x 134 56 2.0 0903-0731 0910-0730 2205CS Electra Coated. No intake window. Pinned on centerline. Longer skirt than stock 54.5 *Nikasil Bore - Cylinder sleeving or replating required for oversizes CR125R 03 54 125 54.0 STD 0903-0286 676M05400 2126CS CW15 S-467 B1001 Pro-Lite x 54.5 0.5 - 676M05450 2146CS *Nikasil Bore - 54.5 55.0 1.0 - 676M05500 2165CS Cylinder sleeving or replating required for oversizes 56.0 2.0 0903-0203 676M05600 2205CS CR125R 03 54 125 54 STD 0903-0732 0910-0729 2126CS CW15 - - Racer’s Choice GP Style x 134 56 2.0 0903-0733 0910-0730 2205CS Electra Coated. No intake window. Pinned on centerline. Longer skirt than stock 54.5 *Nikasil Bore - Cylinder sleeving or replating required for oversizes CR125R 04 54 125 54.0 STD - 0910-0733 2126CS CW15 - B1001 Pro Lite x 56.0 2.00 - - 2205CS 54.5 CR125R 04 54 125 54.00 STD 0903-0532 0910-0731 2126CS CW15 - B1001 Racer’s Choice GP Style x 56.00 2.00 0903-0683 0910-0732 2205CS Electra Coated *Nikasil Bore - Cylinder sleeving or replating required for oversizes 54.5 57.00 3.00 - 0910-1254 2244CS CR125R 05-07 54 125 54.0 STD 0903-0520 0910-0735 2126CS CW15 - - Pro Lite x 54.5 CR125R 05-07 54 125 54.00 STD 0903-0521 0910-0731 2126CS CW15 - B1001 Racer’s Choice GP Style x 56.00 2.00 - 0910-0732 2205CS Electra Coated *Nikasil Bore - Cylinder sleeving or replating required for oversizes 54.5 3.00 - 0910-1254 2244CS CR250M 75-77 70 248 70.0 STD - 338M07000 2756CD CW18 S-343 B1003 MT/MR250 75-77 x 70.5 0.5 - 338M07050 2776CD 64.4 71.0 1.0 - 338M07100 2795CD 71.5 1.5 - 338M07150 2815CD 72.0 2.0 - 338M07200 2835CD CR250R 78-80 70 248 70.0 STD - 431M07000 2756CD CW18 S-343 B1003 *Chrome Bore - Cylinder x 70.5 0.5 - 431M07050 2776CD sleeving or replating 64.4 70.75 0.75 - - 2786CD required for oversizes 71.0 1.0 - 431M07100 2795CD *2756 CDM rings required for 71.5 1.5 - 431M07150 2815CD Standard Chrome Bore 72.0 2.0 - 431M07200 2835CD
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